---
name: "SoTriangleStripSet"
section: "3iv"
platform: "linux"
package: "inventor-doc"
version: "2.1.6+ds-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/SoTriangleStripSet/3iv"
---

# SoTriangleStripSet(3iv)

triangle strip set shape node

## NAME

SoTriangleStripSet — triangle strip set shape node

## INHERITS FROM

SoBase \> SoFieldContainer \> SoNode \> SoShape \> SoVertexShape \> SoNonIndexedShape \> SoTriangleStripSet

## SYNOPSIS

**#include \<Inventor/nodes/SoTriangleStripSet.h\>**

Fields from class SoTriangleStripSet:

**SoMFInt32**	**numVertices**

Fields from class SoNonIndexedShape:

**SoSFInt32**	**startIndex**

Fields from class SoVertexShape:

**SoSFNode**	**vertexProperty**

Methods from class SoTriangleStripSet:

	**SoTriangleStripSet()**\
 **static SoType**	**getClassTypeId()**

Methods from class SoNode:

**void**	**setOverride(SbBool state)**\
 **SbBool**	**isOverride() const**\
 **SoNode \***	**copy(SbBool copyConnections = FALSE) const**\
 **virtual SbBool**	**affectsState() const**\
 **static SoNode \***	**getByName(const SbName &name)**\
 **static int**	**getByName(const SbName &name, SoNodeList &list)**

Methods from class SoFieldContainer:

**void**	**setToDefaults()**\
 **SbBool**	**hasDefaultValues() const**\
 **SbBool**	**fieldsAreEqual(const SoFieldContainer \*fc) const**\
 **void**	**copyFieldValues(const SoFieldContainer \*fc, SbBool copyConnections = FALSE)**\
 **SbBool**	**set(const char \*fieldDataString)**\
 **void**	**get(SbString &fieldDataString)**\
 **virtual int**	**getFields(SoFieldList &resultList) const**\
 **virtual SoField \***	**getField(const SbName &fieldName) const**\
 **SbBool**	**getFieldName(const SoField \*field, SbName &fieldName) const**\
 **SbBool**	**isNotifyEnabled() const**\
 **SbBool**	**enableNotify(SbBool flag)**

Methods from class SoBase:

**void**	**ref()**\
 **void**	**unref() const**\
 **void**	**unrefNoDelete() const**\
 **void**	**touch()**\
 **virtual SoType**	**getTypeId() const**\
 **SbBool**	**isOfType(SoType type) const**\
 **virtual void**	**setName(const SbName &name)**\
 **virtual SbName**	**getName() const**

## DESCRIPTION

**This shape node constructs triangle strips out of vertices. The vertices may be specified in the vertexProperty** field (from **SoVertexShape**), or by the current inherited coordinates. For optimal performance, the **vertexProperty** field is recommended.

**SoTriangleStripSet** is one of the fastest ways of drawing polygonal objects in Inventor. It uses the current coordinates, in order, starting with the first one. The values in the **numVertices** field indicate the number of vertices to use for each triangle strip in the set. The number of values in this field determines the number of strips.

For example, if **numVertices** has the values \[3,5\], coordinates 1, 2, and 3 would be used for the first triangle strip and coordinates 4, 5, 6, 7, and 8 would be used for the second strip. This would result in 1 triangle in the first strip and 3 in the second.

The coordinates of the strips are transformed by the current cumulative transformation. The strips are drawn with the current light model and drawing style.

Treatment of the current material and normal binding is as follows: The **PER\_PART** binding specifies a material or normal for each strip of the set. The **PER\_FACE** binding specifies a material or normal for each triangle. The **\_INDEXED** bindings are equivalent to their non-indexed counterparts. The default normal binding is **PER\_VERTEX**. The default material binding is **OVERALL**.

If any normals (or materials) are specified, Inventor assumes you provide the correct number of them, as indicated by the binding. You will see unexpected results if you specify fewer normals (or materials) than the shape requires. If no normals are specified, they will be generated automatically.

## FIELDS

**SoMFInt32**	**numVertices**\
 Number of vertices in each triangle strip. The number of strips is equal to the number of values in this field.

## METHODS

	**SoTriangleStripSet()**\
 Creates a triangle strip set node with default settings.

**static SoType**	**getClassTypeId()**\
 Returns type identifier for this class.

## ACTION BEHAVIOR

**SoGLRenderAction**\
 Draws a strip set based on the current coordinates, normals, materials, drawing style, and so on.

**SoRayPickAction**\
 Picks on the strip set based on the current coordinates and transformation. Details about the intersection are returned in an **SoFaceDetail**.

**SoGetBoundingBoxAction**\
 Computes the bounding box that encloses all vertices of the strip set with the current transformation applied to them. Sets the center to the average of the coordinates of all vertices.

**SoCallbackAction**\
 If any triangle callbacks are registered with the action, they will be invoked for each successive triangle forming the strips of the set.

## FILE FORMAT/DEFAULTS

```
TriangleStripSet {
vertexProperty	NULL
startIndex	0
numVertices	-1
}
```

## SEE ALSO

**SoCoordinate3, SoDrawStyle, SoFaceDetail, SoFaceSet, SoIndexedTriangleStripSet, SoQuadMesh, SoVertexProperty**